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Search: id:A060852
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| A060852 |
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Sum of number of pips on dice in shape of Platonic solids. |
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+0
4
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OFFSET
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1,1
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COMMENT
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This is obviously a finite sequence, since there are only five Platonic solids.
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LINKS
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Wikipedia, Dice.
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EXAMPLE
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The third number in the sequence is 36 because the third Platonic solid has eight faces and the pips on an eight-faced die add up to 36 [by sum_1^n(n) = 1/2 * n * (n+1), so 1/2 * 8 * 9 = 36 for n = 8].
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MATHEMATICA
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# (# + 1)/2 & /@ {4, 6, 8, 12, 20} (* Robert G. Wilson v, (rgwv(AT)rgwv.com), Apr 18 2008 *)
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PROGRAM
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(Perl) for $n (4, 6, 8, 12, 20) { print $n*($n+1)/2 }
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CROSSREFS
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Cf. A053016.
Sequence in context: A082581 A075846 A164714 this_sequence A089584 A095824 A086225
Adjacent sequences: A060849 A060850 A060851 this_sequence A060853 A060854 A060855
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KEYWORD
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fini,full,nonn
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AUTHOR
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Philip Newton (pne(AT)writeme.com), Aug 09 2001
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